package com.chinasofti.interfacetest;

public interface demo {
    public void a();
    default void b(){
    }
}
 class A implements demo{
    public static void main(String[] args) {
//        demo demo = new demo();
        demo d = new A();
    }

     @Override
     public void a() {

     }

     @Override
     public void b() {
         demo.super.b();
     }
 }